Review aggregator Yelp now displays business locations based on user reviews embedded on a Google Map.

Find restaurants, nightclubs, coffee houses, hair salons and hotels for a zip code and by Yelp user rating all on a handy dynamic map. Yelp would be better if there were more reviews and more locations (the coffee house list for downtown Manhattan, for example, is skimpy) but that's easily solved: just register for a free account and add reviews of favorite - and not so favorite - places in your area.